Question

Virus is an enigma of biology “ justify

Answer 1

Answer:

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Answer 2

Explanation:

virus is a enigma of biology because it's not curable.and they do not contain cell wall. A major enigma of influenza virus is whether alteration of viral specificity for host cell receptors and can generate a pandemic strain of virus. The viral hemagglutinin surface glycoprotein preferentially binds to certain sialic acid residues on host cells ,making hemagglutinin a determinant of host range

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